When I had my first surgery, I was able to hear quite a lot...sometimes TOO much (for example - I was able to hear my cat go to the bathroom across the room...I don't think I want to hear that for the rest of my life. LOL!). After a month or so, I decided to try on my HA because I'm so used to hearing out of both ears, not just one. However, because my HA is set up so I can hear a LOT more of the low frequencies over the highs...it became a little too overpowering over the CI. The CI gave me the clarity that I needed, the HA just gave me the volume. After trying that for a little while, I realize this is not working...it just felt so off balance. Hence why I decided to get my 2nd surgery. It was strange because I can hear better through my right, but it was obvious on how much I was missing.
There *are* some people that find Bimodal approach work for them. It's probably because they have much better balance between the CI and the HA. I didn't. A good friend of mine has told me that he can't hear too well out of the CI, until I told him that he needs to get better mapping out of the CI. When he did, he felt a lot more balanced hearing out of both.
I'm a strong supporter of the fact that you need to focus on your CI ear FIRST and have that mapped out FIRST, then focus on your HA. HA overpowers the CI (mainly the low frequencies), so you're not allowing your CI ear to get used to certain sounds.
Having said that, if you feel that you're hearing pretty much everything when wearing both...that's just perfect for YOUR situation. It may not be the same for someone else...like me. Make sense?